Tension-bar for use in concrete and the like.



No. 815,157.y I

1J. F. GGLDING.

TBNSIONBAR EUR` USB 1N CONCRETE AND THB LIKE.

APLIGATION FILED FEB.20. 1905.

PATBNTED MAR. 13, 1906.

derstood, I have shown 1n the accompanying- IINITE s TEs PATENT OPPICR.

JOHN II. OOLDINC, OP WASHINGTON, DIsTRICT OF COLUMBIA, AssIGNOR 4To MONOLITH sTEEL COMPANY, INCORPORATED, A CORPORATION -OF VIRGINIA. I

TENSION-BAR FOR rUSE IN CONCRETE AND THE LIKE.

, N. siam?. I

` io materials are employed in variousfstructures;

n and it consists in a tension-bar adapted to be Y embedded in or surrounded by such materials,

the-bar comprising a main longitudinal member andinclined members provided with con- I 5 crete engaging or/ locking portions which are lso arranged as to obtain alpositive hold Vupon the material at a' distance from the bar as distinguished- 'from amere skin frictional en- 2o ria is .prevented when the structure is subjected to strainl and the separation of the dIfferent parts of the body of material from each other or from thesaid main-member is rendered impossible.

It further consists in a tension-bar of peculiar construction; also, in such a bar suitably embedded in concrete or the'like also, inthe 'parts and.- combinations thereof hereinafter set forth and claimed. f

In order'to'make the invention clearly unf drawings means for carrying the Ysame into practical eliect without linntmg my, Improvements in their'useful applications to the pre- 3`5 cise constructions and-'arrangements which, lfor. the sake of example, I have delineated.

' In said drawings,Vv Figure 1 is .a sectionalv view of the AInain longitudinal memberof a tension-bar embodying my InventIon on l1ne 4o I ofi-Fig. 2. Fig. 2'is aside viewl of aportion of said' main member; Fig. 3 is a side vlew,

lon`a smaller sc'ale, of a portion of my-impro vec l v tensi )nbar, showing two, ofthe mclmed or l supplemental members combined with the 45 main longitudinal member'. FIg. 4 Isa slnnlar view showin@r supplemental members of a different forni also embodyingthe invention. Fig. 5 lis a'sideview showinganother form of supplemental member.

5o partly in section, of a portion/of the tensionbar united with one ofthe Hoor-beams.

' showing also the body of concret-e around the Specicationfof Letters Patent.v lApplicationfiled Pebruary`20, 1905'. SeriallmZi-d.

gagement, whereby the cracking of the mate Fig. 6 isa side view,

Fig'. 7 isa sectional view at 4rightangles to Fig. 6,y

' Patented March 13.1906.

tension-bar.' \Fi"g. 8 isa verticalsectional view of a concrete floor or beam containing a tension-bar of theform shown in Fig. 3. Fivs.

9 and 1 0 are pe'rspeetive views of the supp ementalA members shown, respectively, in Figs 3 and 4. i Figs. 11 and- 12 are sectional views across the tension-bar atthe oint' where it. is

Aunited with. a supplementa ,membely said views showmg, respectively, a supplemental member of square crossesectionand oneo .round cross-section. Fig. 13 is a planview,

partly in section,'of a ,portion of a -loor having tension-bars embodying my invention,

in this instance the `supplemental membersv extending horizontally on leach 'side of the 'grooved member.

I have herein shown and describedthe tension-bar as combined in a loor; but it will b 'e understoodthat theinvention is not confined to use in 'such particularstructure. The Word concrete `as used herein is intended to cover all built-up structures of similar or analogous materials.

Referring tothe drawings, l indicates the main or longitudinal member ofthe tension- -bar A, made 'of suitable material, such as iron for steel, to have the necessary tensile strength.

Themember 1 is rolled or otherwise formedwith a longitudinal surface-groove 2., extend-v .'ing for a, portion of or by preference for the entire len th of-the -member and leaving a relatively eavy main body from and beyond Which-extendthe op osing lipsvv 11'. When the bar A is combine in a oor, as shown in Figs. 7 and 8, the member 1 is laid substantially horizontally with the groove 2 on the Vupper side. `The member 1 is or may be prov1 ed at its ends with screw-.threads 3 and nuts 4, as indicated in Figs. 2 and 6. In Flg. 3 the supplemental members are shown at a extending in an inclined direction I upward and away from the member 1. They are provided with feet ,5, securely held in the groove 2 and at a distance from the member 1, with concrete engaging orlocking ortions l6'arranged;cros'swise of-or aty an ang -e to they general direction of" the -supp emental niember, so as to obtain a positive hold or lock on or in the concrete. Thus .the portions 6 may be parallel, with the member 1, as shown in.

Figs. 3, 5, and 8. In this particular construc' tion of supplementalmember'(shown .at a) it' is formed of a bar of metal the Iniddle of which l IOO ' by the limbs 9 ott eyes or loops l0.

' member l.

sims? forms the engaging or locking part 3, the l its foot may be a little less than the depth ol" ends of Which are legs extending in an inl the groove 2, Figs. il

clined direction to the member' l and the extremes oi' which constitute the 'feet 5. ln order `to effect the most economical distrilnition. of metal, l usually prefer to make the Supplemental members progressively a little longer or higher as the end of' the main bar is approached, as indicated in Figs. 3, 5, and S. Another form of supplemental member is shown in Figs. 4, 6, 7, and 10 at l),A the same having a single leg 7 and foot 8. rllhe concrete engaging or loclring'portions are formed v The ,latter are of diamond or other suitable shape. The members shown at l) are or may be short sections of the tension-bar which is the sub ject of my Patent No. 758,061, dated April 26, 1904. The legs of the supplemental members may extend at right angles to the bar l instead ci being inclined, as seen inlig. 5.

' 7iihe tension-rod described is or may be delivered in a knockdown condition, the supplemental members separate from the main The parts are. then assembled according to the requirements of the floor or other structure, the supplemental members being spaced apart or arranged as desired in the groove 2 of the member Land the feet of the supplemental members are secured by forcing inwardthe lips or parts l1, which extend outward from and beyond the main body of the 'member l, with a suitable press or sWage, so as to permanently set the metal of the member i. against or onto the sides oi the supplemental members. The tensionbar A may, however, be completed Jfor use at the factory, in which case the parts may be permanently united by a rolling process, the bar with the supplemental members inserted in its groove being passed between grooved rollers suitably shaped to upset, bend, or compress the metal of the member l, as de- Sired.

The preferred manner oit attaching the tension-bar to the supportingbeams is shown in Fig. 6, Where one of such beams is imlicated. rat B. The end oi the member l is inserted through an laperture in the lower part of the vertical web of the beam, and the nut 4- is set up against the Web. The other end ot' the member is similarly secured to another beam. 13 is a tie-rod having a foot 14 secured the described manner in the groove 2 and which scribed.

extends thence in an inclined direction to the i top' of the beam, .vhere it is provided with a hook l5, which engages the top llange or other convenient part ol" the beam. The tie strengthens and supports the member l, strengthens the concrete at one of its points most subject to heavy strain, and keeps the tensionebar A upright during building.

rlhe supplemental members may be of square, round, or other cross-section. The

and l2, in which case the edges of' the groove are or ma \v be bent partly over'or around the loot olz the supple.- mental member, as indicated at 16 in said iigures.

` (l is a body of concrete representing a i'loor, beam, or other structural element. lt in closes the bar A and enters the spaces between or within the supplemental members.

In Fig. 13 l have shown supplemental members consisting of plain straight bars sccured in the grooved bars, as already deln this construction the supple mental members are. arranged horizontally. rlihe bar shown at A has tivo of the described grooves opposite to cach other, one on each side of the bar, and the supplemental meinbers c are secured some in one groove and some in the other, extending in opposite directions from the grooved bar. The bar shown at A .is similar to that shown in the other figures and has the groove on its upper side. The supplemental members d have downwardly-bent feet b, seated in thc groove 2, and thence extend horizontally to each side of the bar A.

lWhere tension-bars are constructed with the supplemental or concrete-locking members integral with the part or parts that act as tension members, the latter cannot well be. of the highest tensile strength on account of the concomitant hardness and the dilliculty of cutting and forming the supplemental members from it. My present improvenient allows the member l to be made of the highest tensile strength without en countering said diiculty, and l can get the same structural strength with less metal and Weight. Also l am enabled to closely adapt thc tcnsion-bar at the place of building to the requirements of the structure, doing away with the necessity oi having made to order at the factory in complete form the various tension-bars for the ditlerent parts of the building. lt will be further noticed that the described means for securing the supple mental members to the member l leaves to the latter the i ull tensilestrengthol the metal which is contained in it. .ln other words, there is no metal which is wasted for tensile purposes, as would. be the case if' the .member 1 were perforated or cut away on transverse lines.

The feet ot the supplemental members are extended longitudinally in the groove oi' the main bar sull'ieiently to enable the bar to have a firm and secure hold on the supplemental member. This maybe ell'ected in different ways-fo1j instance, by making the supplemental member wide in the direetiim of the groove, as shown at S, Figs. 6 and l0, or by bending such feet in a direction parallel ivith the groove,- as shown at 5, Figs. 3 and thickness of the supplemental member or of 9. lt is to be understood thatthc word "tenlOO llO

sionis herein used. vin` connecti ceiving the strainsimpose :35. IThe"combination,with 'af body' of conf crete, of a metal barsurroundedbysuch con-' v crete and formed Jwith'a` continuous longitul F3.

5...".1naking the main-bar 1 with aA continuous l dinal groove, andi one ,or more supplementalgrooveor grooves. YYhen" A f such shape, it can be very economicallfyproduced:by a rolling p rocess.I The groove-producingange of the roll enters andy rolls and iinishes the intev rior of the bar to a material degree, thereby giving to the bar an extra amountv of rolled toughskin or surface and increased tensile strength. ,The bar is or may be of uniform cross-s`ection, having no Waste metal which is not utilized for strengthenin purposes. The supplemental members can de at any desired points alonelr the bar, according to the requirements o? "the structure or -building, and there secured with the greatest The grooves at their portions' firmness. which are not occupied by the supplemental members are open 4to receive the concrete or cement and unitel the bar with 'the same` against lateral strains, giving the bar also a y stron frictionaly hold on the concrete to pre- 3o vent ongitudinall displacement- Inl assemblin the supplemental members with the bar the ormer will readily become seated in thel groove Without its being necessary to exercise great particularity as to ltheir exact location longitudinally ofi-the bar. can be united by a simplerolling process, the bar`having the supplemental members inserted in its, groove or grooves being Apassed betWeen'rolls,Which act on it from end to end 4o and bring the Walls of the groove or grooves l to bear securely against the sidesof the suppl'emental' members. If the bar is not of too great cross-section, such assembling-rolls -may com ress the\bar ,a/sfa Whole to bring the Walls of tiie grooves nearer together, but my improvements are not-:to be limited to Vsuch recise mode of securing theparts together. Yfthe barbe of such sizel that it cannot be eadily compressed as a whole, Iy may cause he rolls to act along those par-ts of the bar .j jbetw'een'which the groove is situated or I v 1v4 may use aswaglng process, as already ex- "plained` What I- claim is- 1. The combination, with a body of concrete, of a met-al bar supporting such concrete and formed with a continuous longitudinal groove, andA one ormore supplemental members arranged 'in said grooveat the desired points in the length of the bar and secured in the groove, substantially as` andor the pur- )oses described. Y f2. A -metalstrengthening-bar for use in concrete and the like, said bar being formed With ajcontinuous longitudinal groove,

iiftlf ...bar 1't'o indicate its general functioninre-v i @entrata .j ted-tog beeupsetg:to;. secure arrangedv The parts members adjustable along the groov bant'o thedesired: points gftheb'ar being hesilppl'r'n ntf v sandfrjthe p'u members,;- substantiafll Amembers securedin such groove, the open .portion of the groove being adapted to receivetherein, and `obtain a hold on, the concrete, substantially as and for the purposes described.

4. A 4tension-bar for'use in concretel and.l

.-.g l i I l i -combmatlon with one or more supplemental other purposes, consisting of a main,longitu dinal, -continuously. -grooved member, and supplemental members arranged at desired points along the groove ofsaid main member and having their `feet`or ends extending longitudinally in 'the groove, the metal of the main member being permanently upset to cause the Walls of the groove to rigidly secure said supplementalmembers, substantially as set forth. f

5.y A tension-bar consisting of a main, longitudinally and continuously groovedmember 1, and a supplemental member a formed lwith a longitudinal portion 6 arrangedat a distance from` the main member and 4with legs extending to said mainmember, the ends of said legs being arranged Within the groove ofthe main member and the'metalof the l main member being permanently ups t to cause theWalls of the groove to rigidly i ecure suchends, substantially as set forth.

6. A tension-bar adapted to be sup lied in an unassembled v or knockdown co dition, consisting of a main longitudinal member formed with a continuous groove 2, and supplemental members having parts fitting saidgroove and adapted to be arranged alon such groove and spaced apart as desired, the

main lmember being of malleable material for the securingof the supplemental membersby the permanent upsetting of the material of the main member as described.

- 7. The combination of the tensionbar, consisting of a longitudinal and continuously grooved member, vbeams supporting the ends of said .longitudinal member and a tie engaging the upper part of the beam, extendinfr 1n an inclined direction to said ldigitudina member and having its, end or feat secured by compression in the groove of theJ longitudinal member, substantially as set forth.

8. In combination With a body of 'concrete' or the like, a tension-bar consisting of a main longitudinal member having a relatively heavy main body vand formed With opposing lips extending outward from and beyond the main body, such lips producing a ontinuous f groove wherein the concrete' can enter, and-l supplemental 'mein'b pomts alon ers arranged at desired"- n member and 'hav- Ween such lips, such metal permanently rigidly seoure such and said body of arranged yto surround and ennd the-supplemental vmembers l g the said mai ing their feet or ends bet main membe 'upset to causetlie lips .tol supplemental members,

onerete being gage the bar a r havingits and to enter between said lips of the ber, Sub-- sient'ially lasset 'fori;h. [xo

testimony whereof, Ipaflx my signature in' presen'ee'of` two witnesses'.

JOHN FGOL'DING. Witnessesz.

` H. N Low, e

WM.:H. DE LACY: 

